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Epic exoplanet 55 EP

Kepler-174 d

RA 287.4389° · Dec 43.8320° · exoplanet

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Score breakdown

· 6 badges
55 pts · Epic
Epic 78 pts → Anomaly
  • In the habitable zone +30
  • Distant (over 1,000 light-years) +6
  • Multi-planet system +6
  • Confirmed exoplanet +5
  • Sub-Neptune +5
  • Found by Kepler +3
Total score 55

23 more points to reach Anomaly.

Badges

  • Confirmed exoplanet · +5
  • Distant (over 1,000 light-years) · +6
  • In the habitable zone · +30
  • Sub-Neptune · +5
  • Multi-planet system · +6
  • Found by Kepler · +3

Trivia

What makes it special

  • Goldilocks zone. Sits where it's neither too hot nor too cold — liquid water could exist on a surface here.

What it actually is

  • What it is made of. Too light to be solid rock and too heavy to be all gas: most likely a deep global ocean or a thick steamy envelope over a rocky core.
  • What the zone means. The habitable zone is only about temperature: it is the band where liquid water could survive on a surface. It is a promising address, not evidence of anything living.
  • Crowded system. One of at least 3 planets orbiting its star.

Sense of scale

  • In perspective. Far away by human standards, yet still a local address inside the Milky Way's spiral arms.

Find it in the sky

  • How to spot it. At magnitude 14.5 it is far too faint for the eye: this one belongs to cameras and long exposures.
  • Northern sky. It rides the northern half of the sky — an easier target the further north you are.
  • Best time of year. It stands highest in the middle of the night around July — that's when to go looking.

Properties

density gcc
2.84
diameter km
27936.078
discovery facility
Kepler
discovery method
Transit
discovery year
2014
dist ly
1254.908
eccentricity
0
eq temp k
212
habitable zone
yes
host star teff
4880
inclination
89.99
insolation
0.53
mag
14.53
mass earth
5.43
name
Kepler-174 d
orbital period days
247.3537
radius earth
2.19
semi major au
0.677
sys num planets
3
sys num stars
1

About Kepler-174 d

Kepler-174 d is an epic exoplanet. It lies about 1,254.9 light-years from Earth, shines at apparent magnitude 14.53, has an equilibrium temperature near 212 K and spans roughly 2.19 Earth radii.

Sits where it's neither too hot nor too cold — liquid water could exist on a surface here.

How to see it

At apparent magnitude 14.53, it takes a larger telescope or a long-exposure image to capture.

Like any astronomical target, Kepler-174 d is best seen from a dark site away from city lights, and when it is above the horizon depends on your latitude and the time of year. The visibility panel above works out tonight's viewing window for your saved location.

Why Kepler-174 d is an epic exoplanet

Kepler-174 d scores 55 points on Spacedle's rarity scale, which places it in the epic tier. Another 23 points would lift it into a rarer tier.

That score comes from 6 science badges — Confirmed exoplanet, Distant (over 1,000 light-years), In the habitable zone, Sub-Neptune, Multi-planet system and Found by Kepler — each earned for a real, measurable property of the object. Rarity on Spacedle is never random: the more remarkable an object's astrophysics, the more badges it collects, the higher it scores, and the rarer it ranks.